Bioinspired materials for water supply and management: water collection, water purification and separation of water from oil
Tóm tắt
Access to a safe supply of water is a human right. However, with growing populations, global warming and contamination due to human activity, it is one that is increasingly under threat. It is hoped that nature can inspire the creation of materials to aid in the supply and management of water, from water collection and purification to water source clean-up and rehabilitation from oil contamination. Many species thrive in even the driest places, with some surviving on water harvested from fog. By studying these species, new materials can be developed to provide a source of fresh water from fog for communities across the globe. The vast majority of water on the Earth is in the oceans. However, current desalination processes are energy-intensive. Systems in our own bodies have evolved to transport water efficiently while blocking other molecules and ions. Inspiration can be taken from such to improve the efficiency of desalination and help purify water containing other contaminants. Finally, oil contamination of water from spills or the fracking technique can be a devastating environmental disaster. By studying how natural surfaces interact with liquids, new techniques can be developed to clean up oil spills and further protect our most precious resource.
This article is part of the themed issue ‘Bioinspired hierarchically structured surfaces for green science’.
Từ khóa
Tài liệu tham khảo
United Nations. 2002 General comment no. 15: the right to water (arts. 11 and 12 of the International Covenant on Economic Social and Cultural Rights). See http://www.unhcr.org/49d095742.html.
Shiklomanov IA, 1993, Water in crisis: a guide to the world‘s fresh water resources, 13
EPA, 1995, The Great Lakes: an environmental atlas and resource book, 3
Water Resources Group. 2009 Charting our water future: economic frameworks to inform decision-making. See http://www.2030wrg.org/wp-content/uploads/2014/07/Charting-Our-Water-Future-Final.pdf.
FAO. 2015 Water uses. See http://www.fao.org/nr/water/aquastat/water.use.
World Health Organization and UNICEF, 2015, Progress on sanitation and drinking water
Jürgens N. 2016 Photo guide to plants of Southern Africa. See http://www.southernafricanplants.net.
Vesilind PJ. 2003 Atacama Desert. National Geographic (August 2003). See http://ngm.nationalgeographic.com/features/world/south-america/chile/atacama-text.
Louw GN, 1980, Exploitation of fog water by a perennial Namib dune grass, Stipagrotis sabulicola, S. Afr. J. Sci., 76, 38
AlHajal K. 2016 87 cases 10 fatal of Legionella bacteria found in Flint area; connection to water crisis unclear. See http://www.mlive.com/news/detroit/index.ssf/2016/01/legionaires.disease.spike.disc.html.
Agre P, 1993, Aquaporins: a family of water channel proteins, Am. J. Physiol., 265, F461
Perry M, 2011, Surface modifications of support partitions for stabilizing biomimetic membrane arrays, J. Membr. Sci. Technol., 1, 001
Montemagno C. 2010 Nanofabricated membrane using polymerized proteoliposomes . Patent WO 2010/091078 12 August 2010.
Ramseur JL. 2015 Deepwater Horizon oil spill: recent activities and ongoing developments. See https://www.fas.org/sgp/crs/misc/R42942.pdf.
ITOPF. 2015 Oil tanker spill statistics. See http://www.itopf.com/knowledge-resources/data-statistics/statistics.
EIA. 2015 Crude oil production. See https://www.eia.gov/dnav/pet/pet.crd.crpdn.adc.mbblpd.m.htm.
Begos K. 2014 4 states confirm water pollution from drilling. See http://www.usatoday.com/story/money/business/2014/01/05/some-states-confirm-water-pollution-from-drilling/4328859.
Saito T, 2015, Facile creation of superoleophobic and superhydrophilic surface by using fluoroalkyl end-capped vinyltrimethoxysilane oligomer/calcium silicide nanocomposites—development of these nanocomposites to environmental cyclical type-fluorine recycle through formation of calcium fluoride, Colloid Polym. Sci., 293, 65, 10.1007/s00396-014-3387-5